package jdbc;

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.Statement;

public class JDBCDemo4 {
    public static void main(String[] args) throws Exception {
        Class.forName("com.mysql.cj.jdbc.Driver");

        Connection connection = DriverManager.getConnection(
                "jdbc:mysql://localhost:3306/tedu?characterEncoding=utf8&useSSL=false&serverTimezone=Asia/Shanghai&rewriteBatchedStatements=true",
                "root", "root");
        System.out.println("与数据库链接成功");

        Statement statement = connection.createStatement();

        String sql = "UPDATE userinfo " +
                "SET nickname = '小张' " +
                "WHERE id = 1 ";

        int num = statement.executeUpdate(sql);
        System.out.println(num > 0 ? "修改成功" : "修改失败");
        statement.close();
    }
}
